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NEW 2020

Powerfly FS 4 G2

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£3,250.00 Model 28494

Powerfly FS 4 is the gateway to more exciting trail adventures. It's a full-suspension electric mountain bike that pairs the capability of a 130 mm trail bike with the power of a Bosch motor. A 10-speed drivetrain and a strong aluminium frame with Trek's easy-to-use Removable Integrated Battery (RIB) help you take on more rugged trails with comfort and confidence.

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It's right for you if...

You like singletrack trails and want an e-MTB with a more capable full suspension set-up so you can take on more rugged adventures and stay comfortable and efficient when you do.

The tech you get

A durable Alpha Aluminium frame that fully encases a long-life 500 Wh battery, a powerful Bosch Performance CX 250w drive system that helps you sustain speeds of up to 25 km/h and an ergonomic Purion controller. Plus, a SR Suntour XCR 34 130mm suspension fork with an adjustable air spring, a 130 mm RockShox Deluxe RL shock, a 10-speed Shimano drivetrain and hydraulic disc brakes.

The final word

Full suspension lets you take on bigger, more technical trails. It's more comfortable, more efficient and faster in rough terrain. You're getting great parts and a powerful Bosch e-MTB system, but the biggest advantage of Powerfly FS 4 is the suspension package built for better riding on rugged trail adventures.

favorite_borderWhy you'll love it

  1. For e-MTB, full suspension is a game-changer: it soaks up rugged terrain, so you can ride the Bosch pedal-assist system to its full potential
  2. Trek's Removable Integrated Battery (RIB) system looks great and is super user-friendly: it fully hides the battery in the frame for protection, makes it easy to remove the battery without tools and lets you mount a water bottle cage – even on full suspension e-MTBs
  3. It's equipped with an external charging port for easy charging on or off the bike
  4. It rides like a mountain bike because it is one: it has the same frame and suspension tech that we've refined in our decades-long trail heritage
  5. The Purion controller has Walk Assist and an intelligent eMTB mode that automatically delivers the right amount of power based on your terrain


Features

Bosch Performance Line CX

Bosch's Performance Line CX motor is made specifically for off-road use with more torque and power for better acceleration. The intelligent eMTB mode automatically adjusts the amount of assist to match the terrain. It's a set-and-forget mode that delivers just the right amount of power. You get optimum control, traction and battery life so you can focus on enjoying the ride.

Removable Integrated Battery

RIB is a one-piece battery and cover with a built-in handle that can easily be removed and re-installed in the frame with no tools and no hassle. It’s the most convenient way to remove your battery for transport, security or just easier charging.

Specifications

*spec applies to all sizes unless otherwise noted

Frameset
Frame Alpha Platinum Aluminium, Removable Integrated Battery (RIB), tapered head tube, Knock Block, Control Freak internal routing, Motor Armor, magnesium rocker link, Mino Link, ABP, Boost148, 130 mm travel
Fork SR Suntour XCR 34, air spring, LO R damper, hydraulic lockout, tapered steerer, 44 mm offset, Boost110, 15 mm bolt-on thru axle, 130 mm travel
Shock RockShox Deluxe RL, 205x50 mm
Wheels
Front Hub Formula DC-511, 6-bolt, Boost110, 15 mm thru axle
Rear Hub Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano 8/9/10 freehub, Boost148, 12 mm thru axle
Rear Skewer Bontrager Switch thru axle, removable lever
Rim Bontrager Connection, double-wall, 32-hole, 20 mm width, Presta valve
Spokes J-Bend, 14g, Steel, Black
Tire Bontrager XR3 Comp, wire bead, 30 tpi, 27.5x2.35"
Drivetrain
Shifter Shimano Deore M6000, 10-speed
Rear Derailleur Shimano Deore M6000, mid cage, 42T max cog
Crank FSA 310, 15T w/chain guard, 170 mm length
Cassette SunRace, 11-42, 10-speed
Chain KMC X10, 10-speed
Pedal VP-536 nylon platform
Components
Saddle Bontrager Arvada, steel rails, 138 mm width
*Seatpost Size: S
Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length
Size: M, M/L, L, XL
Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length
Handlebar Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
Grips Bontrager XR Trail Comp, nylon lock-on
*Stem Size: S
Bontrager Rhythm Comp, 31.8mm, Knock Block, 0-degree, 60 mm length
Size: M, M/L, L
Bontrager Rhythm Comp, 31.8 mm, Knock Block, 0-degree, 70 mm length
Size: XL
Bontrager Rhythm Comp, 31.8mm, Knock Block, 0-degree, 80 mm length
Brake Tektro HD-M275 hydraulic disc
Accessories
Battery Bosch PowerTube, vertical, 500 wh
Controller Bosch Purion
Motor Bosch Performance CX, 250 Watt, 75 Nm, 25 km/h max assist



  • Weight

    Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).
  • We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
    Bike and frame weights are based on Trek pre-production painted frames at the time of publication. Weights may vary in final production

    Sizing & fit

    Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown on trekbikes.com are for general comparison purposes only. To find your perfect fit, visit an authorised Trek retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.

     

    Rider Height

    Inseam

    All measurements provided in cm unless otherwise stated.

    Frame size number Frame size letter Geometry position Wheel size A — Seat tube B — Seat tube angle Effective seat tube angle C — Head tube length D — Head angle E — Effective top tube F — Bottom bracket height G — Bottom bracket drop H — Chainstay length I — Offset J — Trail K — Wheelbase L — Standover M — Frame reach N — Frame stack
    15.5 S High 27.5" 36.8 72.9° 74.9° 10 67.4° 57 33.3 1.8 47.4 5.1 9.3 117.6 77 39.9 58.9
    15.5 S Low 27.5" 36.8 72.4° 74.4° 10 66.9° 57 32.7 2.4 47.4 5.1 9.6 117.7 76.5 40.5 59.4
    17.5 M High 27.5" 41.9 72.9° 74.8° 10 67.4° 60 33.3 1.8 47.4 5.1 9.3 120.7 76 43.5 58.8
    17.5 M Low 27.5" 41.9 72.4° 74.4° 10 66.9° 60 32.7 2.4 47.4 5.1 9.6 120.7 75.5 43.5 59.3
    18.5 ML High 27.5" 44.5 72.9° 74.8° 10.5 67.4° 62 33.3 1.8 47.4 5.1 9.3 122.7 74.8 46.1 59.2
    18.5 ML Low 27.5" 44.5 72.4° 74.4° 10.5 66.9° 62 32.7 2.4 47.4 5.1 9.6 122.8 74.3 45.3 59.8
    19.5 L High 27.5" 47 72.9° 74.8° 11 67.4° 63.4 33.3 1.8 47.4 5.1 9.3 124.2 74.6 47.3 59.2
    19.5 L Low 27.5" 47 72.4° 74.3° 11 66.9° 63.4 32.7 2.4 47.4 5.1 9.6 124.3 74.1 46.6 60.2
    21.5 XL High 27.5" 52.1 72.9° 74.8° 12.5 67.4° 66.2 33.3 1.8 47.4 5.1 9.3 127.2 75.8 49.7 60.9
    21.5 XL Low 27.5" 52.1 72.4° 74.3° 12.5 66.9° 66.2 32.7 2.4 47.4 5.1 9.6 127.3 75.3 49 61.6

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